/**封装网络请求 */
/**baseUrl */
var baseUrl = '';              //此处填写您的域名地址

/**token */
const token = sessionStorage.getItem("token");      //获取存储在浏览器中的token
let headers;
if (token) {
    headers = {
        "Authorization": token             //关于请求头
    }
}

/**get请求数据 */
function getData(url = '', params = {}, isLoading = false) {
    if (isLoading) {
        layer.load(1)          //在请求未响应之前,给用户一个等待状态
    }
    var promise = new Promise((resolve, reject) => {
        $.ajax({
            url: baseUrl + url,
            type: 'GET',
            data: params,
            headers,
            success: res => {
                if (isLoading) {
                    layer.closeAll('loading')
                }
                if (res.code == 0) {
                    resolve(res.data)
                } else if (res.code == 404) {
                    layer.msg(res.msg, {icon: 7})
                    reject(res.data)
                } else if (res.code == 401) {
                    layer.msg('登录过期，请重新登录', {icon: 7})
                    setTimeout(() => {
                        sessionStorage.clear();
                        window.location.href = '../page/login.html'        //根据后端返回code,判断一些错误情况
                    }, 1500);
                } else if (res.code == 403) {
                    layer.msg('您无权限访问此系统', {icon: 7})
                    setTimeout(() => {
                        sessionStorage.clear();
                        window.location.href = '../page/login.html'
                    }, 1500);
                }
            },
            error: err => {
                layer.msg(err, {icon: 7})       //其他错误情况
                reject(err)
            }
        })
    })
    return promise
}

/**post请求数据 */
function postData(url = '', params = {}, isLoading = false) {
    if (isLoading) {
        layer.load(1)
    }
    var promise = new Promise((resolve, reject) => {
        $.ajax({
            url: baseUrl + url,
            type: 'POST',
            data: params,
            headers,
            success: res => {
                if (isLoading) {
                    layer.closeAll('loading')
                }
                if (res.code == 200) {
                    resolve(res.data)
                } else if (res.code == 404) {
                    layer.msg(res.msg, {icon: 7})
                    reject(res.data)
                } else if (res.code == 401) {
                    layer.msg('登录过期，请重新登录', {icon: 7})
                    setTimeout(() => {
                        sessionStorage.removeItem('token')
                        window.location.href = 'page/login.html'
                    }, 1500);
                } else if (res.code == 403) {
                    layer.msg('您无权限访问此系统', {icon: 7})
                    setTimeout(() => {
                        sessionStorage.removeItem('token')
                        window.location.href = 'page/login.html'
                    }, 1500);
                }
            },
            error: err => {
                layer.msg(err, {icon: 7})
                reject(err)
            }
        })
    })
    return promise
}
